Fix a few typos in the documentation

doc/Certificate_Authority.adoc

@@ -1,5 +1,5 @@
-Certificate Authority with
-------------------------------
+Certificate Authority with a YubiKey
+------------------------------------
 
 This document explains how to set up a Certificate Authority (CA) with
 Sub-CA private keys stored on YubiKeys.  Typical use for this is
@@ -15,7 +15,7 @@ generate the Sub-CA private keys on an offline host and save a copy of
 those keys.
 
 We have chosen to use a RSA 3744 bit root CA key, and RSA 2048 bit
-keys for the Sub-CAs and EE certificates.  The is limited to
+keys for the Sub-CAs and EE certificates.  The YubiKey is limited to
 RSA 1k and 2k keys (it supports ECDSA too but we chose to not use that
 here).
 
@@ -108,7 +108,7 @@ Generate new management code, PIN and PUK as follows:
   puk=`dd if=/dev/random bs=1 count=6 2>/dev/null | hexdump -v -e '/1 "%u"'|cut -c1-8`
   echo $puk > yubico-internal-https-$user-puk.txt
 
-Configure a fresh with these parameters as follows:
+Configure a fresh YubiKey with these parameters as follows:
 
   yubico-piv-tool -a set-mgm-key -n $key
   yubico-piv-tool -k $key -a change-pin -P 123456 -N $pin
@@ -157,11 +157,11 @@ You may inspect the newly generated EE cert with this command:
 
   openssl x509 -text < yubico-internal-https-subca-$user-crt.pem
 
-Import Sub-CA key to:
+Import Sub-CA key to the YubiKey:
 
   yubico-piv-tool -k $key -a import-key -s 9c < yubico-internal-https-subca-$user-key.pem 
 
-Import Sub-CA cert to:
+Import Sub-CA cert to the YubiKey:
 
   yubico-piv-tool -k $key -a import-certificate -s 9c < yubico-internal-https-subca-$user-crt.pem 
 

doc/OS_X_code_signing.adoc

@@ -1,9 +1,9 @@
 Request, load and use OS X code signing certificates
 ---------------------------------------------------
 
-This is a short step-by-step on how to generate a key in the,
+This is a short step-by-step on how to generate a key on a YubiKey,
 create a certificate request, submit that request to apple, load the
-certificate in the and use it for code signing.
+certificate in the YubiKey and use it for code signing.
 
 Prerequisites
 -------------
@@ -49,7 +49,7 @@ NOTE: -K DER is available from version 0.1.3, with earlier convert to PEM and im
 
    $ yubico-piv-tool -a set-chuid
 
-9. Re-plug the and make sure the certificates show up under the keychain
+9. Re-plug the YubiKey and make sure the certificates show up under the keychain
 "PIV_II" in Keychain Access.
 
 10. Use the certificates as usual with codesign/pkgbuild/productbuild/productsign

doc/SSH_with_PIV_and_PKCS11.adoc

@@ -1,7 +1,7 @@
 Using PIV for SSH through PKCS11
 --------------------------------
 
-This is a step-by-step for how to get a with PIV to work for
+This is a step-by-step for how to get a YubiKey with PIV to work for
 public-key authentication with OpenSSH through PKCS11.
 Primarily on a OS X or Linux system.
 

doc/Windows_certificate.adoc

@@ -1,9 +1,9 @@
 Request and load a certificate from Windows CA
 ----------------------------------------------
 
-This is a short step-by-step on how to generate a key in the,
+This is a short step-by-step on how to generate a key on a YubiKey,
 create a certificate request, submit that request to a Windows CA
-and then load the certificate in the.
+and then load the certificate on the YubiKey.
 
 Prerequisites
 -------------
@@ -31,7 +31,7 @@ Steps
 
   certreq -submit -attrib "CertificateTemplate:User" request.csr cert.crt
 
-4. Load the certificate in the:
+4. Load the certificate on the YubiKe:
    (--key[=STRING] is needed if the management key value is not the default value)
 
   yubico-piv-tool -s 9a -a import-certificate -i cert.crt --key[=STRING]

doc/YubiKey_PIV_introduction.adoc

@@ -29,8 +29,8 @@ The maximum size of stored objects is 2005 bytes.
 Currently all functionality are available over both contact and
 contactless interfaces (contrary to what the specifications mandate).
 
-Preparing a for real use
-------------------------
+Preparing a YubiKey for real use
+--------------------------------
 
 You would typically change the management key to make sure nobody but
 you can modify the state of the PIV application on the YubiKey.  Make sure to